Error Writing "Null" to Tag

Hi, i am getting an error when i create a display and link it to PLC tag.
Please find below error message.
"The node id refers to a node that does not exist in the server address space. "
Even though it is available in both PLC and also in ignition

Any help is appreciated.


Details, please. What OPC Server type (if external) or driver type (if Ignition internal) ? What kind of PLC? What is your actual OPC Item? What is it in the PLC?